package cn.cena.basic.util;

import cn.cena.user.domain.Logininfo;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.util.StringUtils;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.context.support.WebApplicationContextUtils;
import javax.servlet.http.HttpServletRequest;

/**
 *  获取登录用户信息
 */
public class LoginContextUtil {

    public static Logininfo getLoginContext(){

        ServletRequestAttributes requestAttributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = requestAttributes.getRequest();
        return getLoginContext(request);
    }

    public static Logininfo getLoginContext(HttpServletRequest request){
        // 获取token
        String token = request.getHeader("token");

        if(!StringUtils.isEmpty(token)){
            // 不能通过注解获取redisTemplate
            //  获取spring容器
            WebApplicationContext applicationContext = WebApplicationContextUtils.getWebApplicationContext(request.getServletContext());

            //  再从容器中获取bean
            RedisTemplate redisTemplate = (RedisTemplate)applicationContext.getBean("redisTemplate");

            Object obj = redisTemplate.opsForValue().get(token);
            if(obj!=null){
                return (Logininfo)obj;
            }
        }
        return null;
    }
}
